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Your cart is empty.209 Extra Slow Hardener is formulated for use with WEST SYSTEM 105 Resin for general coating and bonding applications in extremely warm and/or humid conditions or when extended working time is desired at room temperature. Provides approximately twice the working time of 206 Slow Hardener. Forms a clear, amber-colored solid with good physical properties and moisture resistance for bonding and coating applications. Not intended for clear coating. 209 SA size hardener is matched for use with 105 A size resin. Cans possibly come 2/3 full which is the appropriate amount to be mixed with 105-A ( quart )
mike
Reviewed in the United States on July 26, 2024
Inlay
SMITH
Reviewed in the United States on November 19, 2024
Built 23 boats with WEST Epoxy. Built custom plumbing (drain) fittings. The Gougeon Brothers WEST System Epoxies are always reliable. Wish more companies produced at this high quality level.
Brian Knight
Reviewed in the United States on September 22, 2023
If it's going to get below 70 at any point during the curing process you will need the 206 hardener which will go down to 60.
Rodney H.
Reviewed in the United States on July 15, 2022
Disappointed in product as can was only half full and you need 2 cans apparently to have enough to go with the 1 quart 105. Though it was enough for my project. And mixed it according to the instructions and added some of their filler to thicken it and it's been 7 days and still tacky and not set completely. Very disappointed in this product.
Elwood
Reviewed in the United States on May 17, 2022
This extra slow set hardener is great for furniture glue ups. Absolutely no reason to rush, plenty of time for adjustments before it sets up (like over an hour!) Leave it in the clamps overnight and you're golden.
Josh D
Reviewed in the United States on September 12, 2020
Stuff works awesome like all of West Systems products. The stuff cures veryyyy slowly, though. I thought that since I was near the gulf in central Florida, in the middle of August, that I would need this tropical hardener, but the stuff ended up taking too long for my needs and I ended up ordering their regular 406 slow hardener and that worked perfect for my needs repairing the keel of my boat. I'd recommend trying the 406 before jumping on the 409!
buzz66boy
Reviewed in the United States on September 27, 2017
I did a fair amount of research and went with West Systems even though it seemed a bit pricey. EXCELLENT product. Great adherence and excellent working time for those larger jobs.
Dragon Mom
Reviewed in the United States on September 22, 2014
This is a great hardener for West Systems epoxy resin. It has a light color, good long open time, low viscosity, and after mixing, can be diluted 10% with acetone for even better penetration. Great for strengthening rotten/soft wood. Measure accurately and mix well for best results. Great price on Amazon so it saved me a long trip to a retailer.
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